CN112491485A - Radio frequency radiation source detection device - Google Patents

Radio frequency radiation source detection device Download PDF

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Publication number
CN112491485A
CN112491485A CN202011430877.6A CN202011430877A CN112491485A CN 112491485 A CN112491485 A CN 112491485A CN 202011430877 A CN202011430877 A CN 202011430877A CN 112491485 A CN112491485 A CN 112491485A
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CN
China
Prior art keywords
module
radio frequency
radiation source
electrically connected
frequency radiation
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Pending
Application number
CN202011430877.6A
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Chinese (zh)
Inventor
陈红云
仇殿辰
伍华艳
管慧文
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Space Defence Technologies Shenzhen Co ltd
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Space Defence Technologies Shenzhen Co ltd
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Publication date
Application filed by Space Defence Technologies Shenzhen Co ltd filed Critical Space Defence Technologies Shenzhen Co ltd
Priority to CN202011430877.6A priority Critical patent/CN112491485A/en
Publication of CN112491485A publication Critical patent/CN112491485A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/104—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof of other parameters, e.g. DC offset, delay or propagation times
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses a radio frequency radiation source detection device. The device includes: the system comprises a CPU, a spectrum measuring module, a radio direction finding module, a signal demodulating module, a receiving/transmitting module and a receiving/transmitting antenna; the receiving/transmitting antenna is electrically connected with the receiving/transmitting module, the receiving/transmitting module is electrically connected with the spectrum measuring module, the radio direction finding module and the signal demodulating module respectively, and the spectrum measuring module, the radio direction finding module and the signal demodulating module are also electrically connected with the CPU. The invention can effectively realize the detection of multi-target and multi-class radio frequency radiation sources.

Description

Radio frequency radiation source detection device
Technical Field
The invention relates to the field of radio frequency radiation source detection, in particular to a radio frequency radiation source detection device.
Background
Currently, important confidential environments and special environments require that any communication product is forbidden to be used, and peeping and eavesdropping are prevented. The environments such as camp, examination room, prison, etc. also need to manage and use the communication products by time intervals. In contrast, the traditional means is to set up security check of the entrance guard, but the effectiveness and real-time effect are not good; or real-time interference is carried out through the high-power radio frequency radiation source interference device, but the interference device is high in cost, high-power blind interference easily causes multi-party accidents such as secondary interference, and the interference of the high-power radio frequency radiation source has radiation harm to a human body, and various discomforts of the human body and even various diseases are induced when the high-power radio frequency radiation source is exposed in a radio frequency radiation area for a long time.
Disclosure of Invention
The invention aims to provide a radio frequency radiation source detection device.
In order to achieve the purpose, the invention provides the following scheme:
a radio frequency radiation source detecting device comprising: the system comprises a CPU, a spectrum measuring module, a radio direction finding module, a signal demodulating module, a receiving/transmitting module and a receiving/transmitting antenna; the receiving/transmitting antenna is electrically connected with the receiving/transmitting module, the receiving/transmitting module is electrically connected with the spectrum measuring module, the radio direction finding module and the signal demodulating module respectively, and the spectrum measuring module, the radio direction finding module and the signal demodulating module are also electrically connected with the CPU.
Optionally, the radio frequency radiation source detection device further includes a signal modulation module, and the signal modulation module is electrically connected to the receiving/transmitting module and the CPU, respectively.
Optionally, the radio frequency radiation source detection device further includes a control chip, and the control chip is electrically connected to the CPU.
Optionally, the apparatus further comprises a positioning module electrically connected to the CPU.
Optionally, the device further comprises an alarm electrically connected with the CPU.
Optionally, the CPU is provided with an external interface.
Optionally, the spectrum measuring module includes: the digital signal processor comprises a radio frequency filter, a mixer, an LNA, an intermediate frequency filter, a quadrature frequency conversion unit and a digital signal processor which are electrically connected in sequence.
Optionally, the radio direction finding module includes: the radio frequency filter, the high frequency amplifier, the difference frequency detector and the digital signal processor are electrically connected in sequence.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the radio frequency radiation source detection device provided by the invention is provided with a frequency spectrum measurement module, a radio direction finding module and a signal demodulation module. The radio direction finding module is used for detecting the general direction of the radio frequency signal; the signal demodulation module can demodulate the received radio frequency signal to determine the type of the radio frequency signal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a radio frequency radiation source detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a spectrum measurement module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a radio direction finding module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the present embodiment provides a radio frequency radiation source detecting apparatus including: a CPU 6, a radio direction finding module 3, a spectrum measuring module 4, a signal demodulating module 5, a receiving/transmitting module 2 and a receiving/transmitting antenna 1. The CPU 6 is used for data processing, control processing, and human-computer interaction.
In this embodiment, the spectrum measuring module 4 is used for detecting the presence or absence of the rf signal and the initial identification of the signal class, and the radio direction finding module 3 is used for detecting the general direction of the rf signal. The detection of the radio frequency radiation source is the detection of a radio frequency signal physical layer, the receiving/transmitting antenna 1 scans the radio frequency spectrum of a measuring area, and the receiving/transmitting module 2 amplifies and filters signals received by the antenna. The spectrum measurement module 4 determines the center frequency, bandwidth, signal strength, signal type of the received radio frequency signal. According to the measured frequency spectrum information, the signal types are preliminarily classified, for example, when a 2400MHz frequency is detected, the signals are preliminarily classified into WIFI signals, remote control signals, Internet of things signals and Bluetooth signals, and then the conclusion that no communication equipment such as a mobile phone, an interphone and a radio station exists at present can be obtained. In practical applications, referring to fig. 2, the spectrum measurement module 4 includes: the digital signal processor comprises a radio frequency filter, a mixer, an LNA, an intermediate frequency filter, a quadrature frequency conversion unit and a digital signal processor which are electrically connected in sequence. An off-chip RF (radio frequency) filter located in front of a Low Noise Amplifier (LNA) is used to attenuate out-of-band signals and image interference. Using this oscillator, the entire spectrum can be down-converted to a fixed intermediate frequency. The channel selection can be normally carried out by using an off-chip intermediate frequency filter in front of the down-conversion circuit, and the requirements on the dynamic range of the orthogonal frequency conversion unit and the digital signal processor can be reduced. The choice of intermediate frequency is important in confirming the selectivity and sensitivity of the receiver. I, Q signals are obtained through orthogonal frequency conversion, radio frequency signals are converted into digital signals, and frequency spectrum information is obtained through digital signal processing. The wireless direction finding utilizes a wireless direction finding technology, a Doppler direction finding principle, an arrival time difference direction finding principle, a time difference passive positioning principle and a Watson-Watt direction finding method to judge the approximate direction of the radio frequency signal source. In practical applications, referring to fig. 3, the radio direction finding module 3 includes: the radio frequency filter, the high frequency amplifier, the difference frequency detector and the digital signal processor are electrically connected in sequence. Preferably, in the present embodiment, a spectrum measuring module with model number AD-FMCOMMS3-EBZ + ZEDBOARD, a signal demodulating module with model number HackRF One, a signal modulating module with model number USRP B210 gnuradio and a radio direction finding module with model number KerberossRD can be adopted.
In this embodiment, the signal demodulation module 5 demodulates the received radio frequency signal, transmits the demodulated signal to the CPU 6, and the CPU 6 analyzes the signal to finally determine the type of the signal.
As an optional implementation manner of this embodiment, the radio frequency radiation source detection apparatus provided in this embodiment may further include a signal modulation module, where the signal modulation module is electrically connected to the receiving/transmitting module 2 and the CPU 6, respectively. The signal modulation module blocks signals of the communication equipment by modulating the signals. The targeted interference to the radio frequency radiation source is realized, and the problem of secondary interference is not generated.
As an implementation manner of this embodiment, the CPU 6 is provided with an external interface 9, supports multiple types of arbitrary networking, and implements networking deployment and online real-time detection and control. The system supports the connection of a radio frequency interference machine and realizes the detection and striking integration.
As an implementation manner of this embodiment, the radio frequency radiation source detection device provided by the present invention further includes a control chip electrically connected to the CPU 6, and when the radio frequency radiation source detection device is used alone, offline control can be implemented.
As an implementation manner of this embodiment, the radio frequency radiation source detection apparatus provided by the present invention further includes a display screen electrically connected to the CPU 6 and the control chip. The CPU 6 may display relevant parameters, orientations, etc. of the radio frequency radiation source on the display screen, and the user may also perform human-computer interaction operations, such as inputting control commands, etc., through the display screen.
As an implementation manner of this embodiment, the radio frequency radiation source detecting device provided by the present invention further includes a positioning module 7 electrically connected to the CPU 6, where the positioning module 7 may determine the position of the radio frequency radiation source detecting device in real time.
As an implementation manner of this embodiment, the present invention further provides an alarm 10 electrically connected to the CPU 6, for sending an alarm signal when the radio frequency radiation source is found to be disabled.
The single machine use of the radio frequency radiation source detection device:
when the device is used in a small space, the presence or absence of radio frequency signals and identification of identities can be effectively and quickly detected.
When the device is used for detecting and positioning the handheld and vehicle-mounted radio frequency radiation source of the mobile platform, the radiation sources of communication equipment, radio station equipment, radar and the like are detected and positioned by utilizing a single detection device. The radio frequency radiation source detection device provided by the invention can be used in all terrain ranges indoors and outdoors. When the platform moves, the antenna receives radio frequency radiation source signals in the environment, coordinate information is recorded in real time, and the signal intensity at different positions is different at different moments. The number, type, identity and position of the radio frequency radiation sources can be marked according to the corresponding positioning method.
The use method of the radio frequency radiation source detection device provided by the invention comprises the following steps:
(1) erecting detection device
And installing a radio frequency radiation source detection device according to the actual situation on site.
(2) Initialization
The first step of initialization is the construction of the current scene of the radio frequency radiation source and the full-band detection. And (4) performing investigation and white list recording of the radio frequency radiation source according to the detection result.
(3) Is provided with
And setting the sensitivity, the alarm mode and the working time period of the radio frequency radiation detector.
The radio frequency radiation source detection device provided by the invention mainly detects a passive radio frequency radiation source, and realizes the detection, positioning and tracking of the radio frequency radiation source by carrying out radio frequency signal spectrum measurement, radio frequency signal direction finding and radio frequency signal modulation and demodulation processing on the radio frequency radiation source. The radio frequency radiation source detection device provided by the invention cannot generate any electronic interference harmful to the human body. The device has the characteristics of strong flexibility, low cost, easy installation, no dead angle, environmental protection requirement conformity and the like.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (8)

1. A radio frequency radiation source detecting device, comprising: the system comprises a CPU, a spectrum measuring module, a radio direction finding module, a signal demodulating module, a receiving/transmitting module and a receiving/transmitting antenna; the receiving/transmitting antenna is electrically connected with the receiving/transmitting module, the receiving/transmitting module is electrically connected with the spectrum measuring module, the radio direction finding module and the signal demodulating module respectively, and the spectrum measuring module, the radio direction finding module and the signal demodulating module are also electrically connected with the CPU.
2. The radio frequency radiation source detecting device according to claim 1, further comprising a signal modulation module electrically connected to the receiving/transmitting module and the CPU, respectively.
3. The radio frequency radiation source detecting device according to claim 1, further comprising a control chip electrically connected to the CPU.
4. The radio frequency radiation source detecting device according to claim 1, further comprising a positioning module electrically connected to the CPU.
5. The radio frequency radiation source detecting device according to claim 1, further comprising an alarm electrically connected to the CPU.
6. The radio frequency radiation source detecting device according to claim 1, wherein the CPU is provided with an external interface.
7. The radio frequency radiation source detecting device according to claim 1, wherein the spectrum measuring module comprises: the digital signal processor comprises a radio frequency filter, a mixer, an LNA, an intermediate frequency filter, a quadrature frequency conversion unit and a digital signal processor which are electrically connected in sequence.
8. The radio frequency radiation source detection device of claim 1, wherein the radio direction finding module comprises: the radio frequency filter, the high frequency amplifier, the difference frequency detector and the digital signal processor are electrically connected in sequence.
CN202011430877.6A 2020-12-07 2020-12-07 Radio frequency radiation source detection device Pending CN112491485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011430877.6A CN112491485A (en) 2020-12-07 2020-12-07 Radio frequency radiation source detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011430877.6A CN112491485A (en) 2020-12-07 2020-12-07 Radio frequency radiation source detection device

Publications (1)

Publication Number Publication Date
CN112491485A true CN112491485A (en) 2021-03-12

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Application Number Title Priority Date Filing Date
CN202011430877.6A Pending CN112491485A (en) 2020-12-07 2020-12-07 Radio frequency radiation source detection device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113872710A (en) * 2021-10-27 2021-12-31 中北大学 Programmable radio signal real-time monitoring alarm system and method
CN115542242A (en) * 2022-09-23 2022-12-30 成都泰格微波技术股份有限公司 Passive detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113872710A (en) * 2021-10-27 2021-12-31 中北大学 Programmable radio signal real-time monitoring alarm system and method
CN115542242A (en) * 2022-09-23 2022-12-30 成都泰格微波技术股份有限公司 Passive detection device
CN115542242B (en) * 2022-09-23 2023-10-13 成都泰格微波技术股份有限公司 Passive detection device

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